Accelerated degradation experiment modeling method based on fuzzy theory

A technology of accelerated degradation test and fuzzy theory, which is applied in the field of accelerated degradation test, can solve the problems of fuzzy theory research of accelerated degradation test, and achieve the effect of reference value and reasonable results
CN104463331AActive Publication Date: 2015-03-25BEIHANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
BEIHANG UNIV
Publication Date
2015-03-25

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Abstract

The invention discloses an accelerated degradation experiment modeling method based on a fuzzy theory. The accelerated degradation experiment modeling method comprises the specific steps of 1 utilizing the fuzzy theory to enable degradation data to be reasonably fuzzified so as to obtain fuzzy degradation data, 2 utilizing fuzzy degradation regression to establish an accelerated degradation test fuzzy linear degradation model and 3 performing model parameter evaluation and reliability degree prediction. According to the established fuzzy linear degradation model, a fuzzy evaluation value of a model parameter is given, and a fuzzy life prediction interval and a fuzzy reliability interval of a product are further given. Compared with a point estimated value given by means of a traditional statistical analysis method, the result obtained by means of the accelerated degradation experiment modeling method is reasonable and has reference value.
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Description

technical field

[0001] The invention is an accelerated degradation test modeling method based on fuzzy theory, belongs to the technical field of accelerated degradation tests, and is used for solving technical problems in the field of reliability and system engineering. Background technique

[0002] With the development of science and technology, the requirements for product reliability are getting higher and higher. For products with long life and high reliability, the accelerated life test (ALT—Accelerated Life Testing) that needs to use the failure data observed in the test has been unable to meet the requirements. Require. Due to the fact that long-life and high-reliability products sometimes fail to be observed in ALT or cannot be observed at all, this brings great difficulties to product life and reliability evaluation. Accelerated degradation test (ADT—Accelerated Degradation Testing) was developed under this background. The so-called accelerated degradation test is...

Claims

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